Mysys.LockFree unit test crashes intermittently

[Laurynas Biveinis]

On 5.6 trunk:

unit_tests w0 [ fail ]
        Test ended at 2017-04-10 10:06:11

ctest failed with exit code 2048, see result below
...
18/24 Test #18: merge_small_tests ................***Exception: SegFault 0.32 sec
# Running 748 tests from 45 test cases
1..748
# Global test environment set-up
...
# Run 115 Mysys.LockFree

      Start 19: simple

[Laurynas Biveinis (laurynas-biveinis)]

Implementing bug 1684601 to catch this.

[Laurynas Biveinis (laurynas-biveinis)]

Seen on 5.5 too:

11/14 Test #11: lf ...............................***Failed 0.06 sec
# N CPUs: 4, atomic ops: gcc-builtins-smp
1..7
ok 1 - my_atomic_initialize() returned 0
# Testing lf_pinbox (with my_thread_init) with 30 threads, 3000 iterations...
ok 2 - tested lf_pinbox (with my_thread_init) in 0.0067674 secs (0)
# Testing lf_alloc (with my_thread_init) with 30 threads, 3000 iterations...
# 0 mallocs, 3 pins in stack
ok 3 - tested lf_alloc (with my_thread_init) in 0.0193768 secs (0)
# Testing lf_hash (with my_thread_init) with 30 threads, 300 iterations...
Bail out! Signal 11 thrown

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-1084